The C300 Sport is a capable car and was more competitively priced than the 2001-2007 model it replaces. Quick and refined, braking performance is excellent, but the steering is overly light and feels out of place in a sport sedan. The taut suspension translates into a stiffer ride than many competing models. We also tested the base C250, powered by an exceptionally smooth, 201-hp, turbocharged four-cylinder engine that was new for 2012. It serves up ample power, but its average fuel use of 24 mpg is not exactly stellar. We liked the steady, supple ride and agile handling in the Luxury trim we tested. It was more comfortable riding and about as agile as the Sport version of the six-cylinder C300. For both versions, the cabin remains snug, but it's quiet with supportive seats. The controls are better than those on most Mercedes, yet some are not logical to use.